amath  1.8.5
Simple command line calculator
viewer.cpp
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1 /*-
2  * Copyright (c) 2014-2018 Carsten Sonne Larsen <cs@innolan.net>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
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12  * documentation and/or other materials provided with the distribution.
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26  * https://amath.innolan.net
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28  */
29 
30 #include "amath.h"
31 #include "amathc.h"
32 #include "viewer.h"
33 #include "lib/charbuf.h"
34 
35 #if defined(DEBUGTREE)
36 
37 Viewer::Viewer(SyntaxNode* root)
38 {
39  this->root = root;
40  output = new CharBuffer();
41 }
42 
43 Viewer::~Viewer()
44 {
45  delete output;
46 }
47 
48 char* Viewer::GetTree() const
49 {
50  output->ClearBuffer();
51  Structure(root, 0);
52  output->EnsureGrowth(42);
53  output->Append('\n');
54  output->Append('-', 40);
55  output->Append('\n');
56 
57  return output->GetString();
58 }
59 
60 void Viewer::Structure(SyntaxNode* node, int level) const
61 {
62  if (node == nullptr)
63  {
64  output->EnsureGrowth(1);
65  output->Append('~');
66  }
67  else
68  {
69  node->ResetIterator();
70  Structure(node->GetNext(), level + 1);
71  output->EnsureGrowth(level + StrLen(node->GetTextCode() + 1));
72  output->Append('\t', level);
73  output->Append(node->GetTextCode());
74  output->Append('\n');
75  Structure(node->GetNext(), level + 1);
76  }
77 }
78 
79 #endif